Abstract

Between 1970 and 1972 forty three black rhinoceroses Diceros bicornis Linn., were darted from a helicopter and transferred to the Etosha National Park, where they have become well established and now constitute a viable population. Using an etorphine/azaperone combination, a mean immobilisation time of 8 min 22 s was obtained. A multi-lift system fitted to the transport vehicle facilitated the loading of rhinos in difficult terrain.